Which kingdom contains heterotrophs with cell walls of chitin?

It would not be plants, even though it has cell walls. They are not made of chitin. Plants are also not heterotrophic.

Fungi, however, decompose other matter, and have cell walls made of chitin. This would fit the description.

i need an image of the diagram

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.